Add .vok files from https://github.com/coq/coq/pull/11075

In our IntelliJ projects where we are using Gradle, the file .idea/compiler.xml and files inside the .idea/artifacts folder are automatically generated by IntelliJ based on the Gradle build model. As these files are generated, they should be ignored in version control.

See https://github.com/David-OConnor/pyflow for details.

TeXnicCenter produces a status file named *.tps which holds information on currently open *.tex files and window positions. This most likely should not be checked in.

If packer crashes, it write logs to the file "crash.log" in the current directory. This file should not be tracked in version control.

JustCode has been discontinued as the features it provided are now included in Visual Studio 2017 and newer. (#3227)

* Remove conflicting gitignore lines, add reference

Ref (introduction of a new "public" folder in Next.js):
https://nextjs.org/blog/next-9-1#public-directory-support

* Improve solution to conflicting files

Added ignore for workspace files (*.code-workspace). They can be added in any directory, depending on the user's preferences.

Some Qt packages builds versioned shared objects which will generate foobar.so.n symlinks to the output file. These files should not tracked by git.

* Adding ignore rule for temporary office files.

* Adding Logs folder to ignore file.

* Revert "Adding ignore rule for temporary office files."

This reverts commit f6f191b12865614df05257363917b3eada058909.

The *.qm binary translation files are generated from the translation *.ts files and should not be tracked by git since they are generated.

Having `release/` in an Android project gitignore means those apps which have different
build types files for `debug` and `release` will fall into this 
and all `release` related files will be never added or will be removed from
repository at some point.

* Add rebar3 tool files and directories

* Add headers to specify tools artifacts

* added further cache directory
* added auto-generated documentation location

* Upgrate to rails 6.0.0

* Simplify Rails.gitignore

There are a number of OpenSSL-related file extensions (e.g., .pem, .crt,
etc..) that contain data that are generally best not committed to
repositories.  This file contains several common file extensions that
often correlate to these types of files.

.svg files are more often than not vector files. You need to exceed 36 swap files for a .svg file to come from Vim.

* Add esp-idf.gitignore

From https://github.com/espressif/esp-idf-template/blob/master/.gitignore

* Add header comments to esp-idf.gitignore

Newer versions of KiCad call the schematics backup file `.sch-bak`.

* Update Autotools.gitignore

Add ignore-rule for Makefiles generated by configure
(directly by config.status)

* Add some descriptive comment.

Add more descriptive comment to explain why Makefile should be ignore.